1355138752805 has 8 divisors (see below), whose sum is σ = 1626174763800. Its totient is φ = 1084105495296.

The previous prime is 1355138752801. The next prime is 1355138752817. The reversal of 1355138752805 is 5082578315531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 205710323809 + 1149428428996 = 453553^2 + 1072114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1355138752805 - 2² = 1355138752801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355138752801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620681 + ... + 1759409.

It is an arithmetic number, because the mean of its divisors is an integer number (203271845475).

Almost surely, 2^{1355138752805} is an apocalyptic number.

It is an amenable number.

1355138752805 is a deficient number, since it is larger than the sum of its proper divisors (271036010995).

1355138752805 is a wasteful number, since it uses less digits than its factorization.

1355138752805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376743.

The product of its (nonzero) digits is 5040000, while the sum is 53.

The spelling of 1355138752805 in words is "one trillion, three hundred fifty-five billion, one hundred thirty-eight million, seven hundred fifty-two thousand, eight hundred five".